CN103558476A - Detection system for high-voltage power grid running state - Google Patents
Detection system for high-voltage power grid running state Download PDFInfo
- Publication number
- CN103558476A CN103558476A CN201310554100.4A CN201310554100A CN103558476A CN 103558476 A CN103558476 A CN 103558476A CN 201310554100 A CN201310554100 A CN 201310554100A CN 103558476 A CN103558476 A CN 103558476A
- Authority
- CN
- China
- Prior art keywords
- time
- condition monitoring
- zero cross
- monitoring
- unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention relates to a detection system for a high-voltage power grid running state. The detection system is composed of a plurality of running state detection points. Each running state detection point comprises a high-voltage electrification sensor and a synchronous timing unit. According to the system, the synchronous timing units are used for providing synchronous detection time so that the detection time of the running state detection points can be accurate and synchronous, and the detection system is used for researching influences, on the running state of power grid equipment, of the running environment of a high-voltage power grid.
Description
Technical field
The present invention relates to a kind of high-voltage fence condition monitoring system, it is comprised of a plurality of condition monitoring points, each condition monitoring point comprises an electrification in high voltage sensor and time synchronisation unit, described system provides synchronous detection time by time synchronisation unit, make accurate synchronization detection time of a plurality of condition monitoring points, it is the impact on grid equipment and equipment running status for the running environment of studying high-voltage fence.
Background technology
In the transmission of electricity of electric system, power transformation, distribution and electricity consumption link, transmission of electricity link seems particularly important in power grid construction.Transmission line online monitoring system can extract proper vector important in circuit, understand in real time line conditions, and can make correct processing, by communication network layer, transfer to control desk, control center judges the current state of circuit by model of mind, export corresponding processing mode, then be communicated to relevant departments' enforcement.But Adoption Network communication mode involves great expense and still take at present manual patrol as main.Continuous expansion along with net capacity, equipment rolls up, high-voltage fence is extensively distributed in again Plain and during lofty mountains and steep hills, high-voltage fence equipment and equipment are directly exposed among physical environment, running environment is quite severe, operations staff is also on record tour situation and various test record in time, if still mostly rely on manual patrol to detect, will expend a large amount of manpower and materials, therefore the running state real-time monitoring device of a large amount of on-the-spot quick, effective transmission lines of electricity, is one of important topic of current high-voltage fence operation.
Summary of the invention
Being directly installed on the measuring system of real-time recording unit running status characteristic quantity on transmission line of electricity, is the important means that realizes status monitoring, assessment of failure and maintenance.But because the measurement mechanism being arranged on transmission line of electricity is generally independent separately; there is timing error in the conventional timer in measurement mechanism; it is very normal that two timers differ a few minutes every day; when timer is after operation a period of time; cumulative errors is by considerable; so different condition monitoring point; the measurement data recording at each time point of accident and surroundings monitoring has lost the meaning of doing accurately relatively, this connecting each other between just may the operation of indistinguishable equipment sign, meteorological condition and fault.Each measurement mechanism wants by internet communication on the other hand, realizes long-time accurate synchronization in real time and measures, and needs a large amount of human and material resources, financial resources, therefore in the urgent need to a kind of synchronous measuring apparatus simply accurately.
The present invention relates to a kind of high-voltage fence condition monitoring system, it is comprised of the condition monitoring point of a plurality of monitoring same ultra-high-tension power transmission lines, and each condition monitoring point is independent mutually, and regularly detects by preset time, and it can be loaded on indoor or outdoors.Each condition monitoring point comprises an electrification in high voltage sensor, time synchronisation unit, electronic switch and comprehensive Real-Time Monitoring unit.Its middle-high pressure electrification sensor is a kind of product auxiliary equipment for high voltage display device on market, electrification in high voltage sensor is made into support insulator and is loaded on ultra-high-tension power transmission line, its center has a bar type electric capacity to take out pressure fuse, it is a kind of function ceramics forming through roasting, its periphery is made by the casting of epoxy resin heating final vacuum, and its upper flange plate contacts and be used for fixing charged bus with electrification in high voltage bus.10kV level bar type electric capacity is taken out and is pressed the capacitance of fuse can reach 140～160pF, and 35kV level can reach 55pF left and right, when the present invention uses by it through a dividing potential drop capacity earth, from the ungrounded end of dividing potential drop electric capacity, extract dividing potential drop.
Press principle of capacitive divider, the terminal voltage of dividing potential drop electric capacity can be determined by following formula:
Ｕ２＝【Ｃ１／（Ｃ１＋Ｃ２）】×Ｕ１
In formula, C1----bar type electric capacity is taken out the electric capacity of pressing fuse
C2----dividing potential drop electric capacity
U1----phase voltage
The terminal voltage of U2----dividing potential drop electric capacity
If the C1 being adopted in 35kV level high voltage display device product of take is 55pF, C2 is 3924pF, C2 both end voltage can obtain as calculated: during 35KV, U2 is 280V, during 10kV, C1 gets 160Pf, U2 is 226V, and this dividing potential drop is sent into time synchronisation unit through divider resistance again.Cycle testing circuit in time synchronisation unit, by this voltage division signal through filter amplifying processing, effectively remove electric field influence and other common interference of various higher hamonic wave signals and adjacent phase or adjacent lines, singlechip interruption mouth in time synchronisation unit is sent into the identification counting that this single-chip microcomputer carries out grid cyclic wave zero cross signal again, the counting of grid cyclic wave is counted grid cyclic wave eigenwert, here adopt grid cyclic wave zero cross signal counting, and by the count value of this grid cyclic wave zero cross signal benchmark lock in time as system.Because electric network source frequency is low, frequency is fixed, and only at zero crossing, judges counting, therefore has very high Stability and veracity.The count signal of time synchronisation unit output grid cyclic wave zero cross signal, through serial port of single chip computer, send comprehensive Real-Time Monitoring cell processing, each time point that comprehensive Real-Time Monitoring unit represents by the preset count value with grid cyclic wave zero cross signal, carries out synchronization timing detection and record.
Described comprehensive Real-Time Monitoring unit, by one or more high-voltage fence various operational factors and the on-line measuring device of surrounding environment weather information form, it as required in market factory provide, between it and time synchronisation unit and host computer, all there is mutual communication capacity.Sensor in these on-line measuring devices gathers respectively facility information on circuit and the microclimate information of surrounding environment comprises: conductor temperature, insulator contamination are measured, the information such as ambient atmosphere temperature, humidity, mist, rainwater conductivity, and will in these input information on-line measuring devices, process, by disposing a large amount of sensor nodes, can obtain long-time, high-resolution environmental data.
Time synchronisation unit in described each condition monitoring point, to start at one time grid cyclic wave zero cross signal to count, this time is the PC of being put by each condition monitoring, utilize the Beijing time of issuing on internet, it is the standard time at national time service center or the time that other agreement mechanism issues, as one man by this time point signal through USB/RS232 adapter, the single-chip microcomputer II of sending in electronic switch is processed, trigger and connect electronic switch, thereby connect the power supply of time synchronisation unit, make each condition monitoring point start at one time grid cyclic wave zero cross signal to count.During operation, first turn-off mechanical power switch, after electronic switch in parallel is with it connected, connect again mechanical power switch.Each comprehensive Real-Time Monitoring unit is to detect in the count value of preset a series of grid cyclic wave zero cross signals, and testing result is carried out to record, for the high-tension apparatus of each condition monitoring point and the running status of equipment, carry out comparative study, and connecting each other between sesolution apparatus operation sign, meteorological condition and fault.
Accompanying drawing explanation:
Fig. 1 is a kind of circuit structure block scheme of high-voltage fence condition monitoring system.
Embodiment:
As shown in Figure 1, it is loaded on outdoor for the running status of the equipment of same ultra-high-tension power transmission line and equipment is detected and comparative study a kind of circuit structure block scheme of high-voltage fence condition monitoring system.This system is comprised of a plurality of condition monitoring points, each condition monitoring point comprises that electrification in high voltage sensor 1, time synchronisation unit 2, comprehensive Real-Time Monitoring unit 3, electronic switch 4, PC 5 and USB/RS232 adapter 6 form, its middle-high pressure electrification sensor 1 is the auxiliary equipment of high voltage display device product on market, and its voltage division signal is sent into time synchronisation unit 2 through divider resistance R.Time synchronisation unit 2 comprises cycle detection 21, single-chip microcomputer 22.Between electronic switch 4 and PC 5, connect a USB/RS232 adapter 6, it makes the single-chip microcomputer II in electronic switch 4 can be by the USB port communications of its serial port and PC 5.Comprehensive Real-Time Monitoring unit 3 comprises insulator contamination on-line measurement, conductor temperature infrared detection and environmental monitoring, and environmental monitoring is monitoring of environmental atmospheric temperature, humidity, rainwater conductivity etc.The contingent insulation fault of various device under the worst case meteorological conditions such as mist, dew, drizzle, may under lower voltage, there is flashover, hot stall in contaminated insulator, set synchronous detection time point environmental monitoring and the condition monitoring of high-voltage transmission equipment, for realizing comparative study and the fault verification in the point in time measurement data of accurate synchronization.
Claims (2)
1. a high-voltage fence condition monitoring system, it is comprised of the condition monitoring point of a plurality of monitoring same ultra-high-tension power transmission lines, it is characterized in that: each condition monitoring point comprises an electrification in high voltage sensor, time synchronisation unit, electronic switch and comprehensive Real-Time Monitoring unit, its middle-high pressure electrification sensor is a kind of product auxiliary equipment for high voltage display device on market, its center has a bar type electric capacity to take out pressure fuse, when the present invention uses by it through a dividing potential drop capacity earth, from the ungrounded end of dividing potential drop electric capacity, extract dividing potential drop, this dividing potential drop is sent into time synchronisation unit through divider resistance again, cycle testing circuit in time synchronisation unit, by this voltage division signal through filter amplifying processing, effectively remove electric field influence and other common interference of various higher hamonic wave signals and adjacent phase or adjacent lines, singlechip interruption mouth in time synchronisation unit is sent into the identification counting that this single-chip microcomputer carries out grid cyclic wave zero cross signal again, and by the count value of this grid cyclic wave zero cross signal benchmark lock in time as system, the count signal of time synchronisation unit output grid cyclic wave zero cross signal, through serial port of single chip computer, send comprehensive Real-Time Monitoring cell processing, each time point that comprehensive Real-Time Monitoring unit represents by the preset count value with grid cyclic wave zero cross signal, carry out synchronization timing detection and record, time synchronisation unit in described each condition monitoring point, to start at one time grid cyclic wave zero cross signal to count, this time is the PC of being put by each condition monitoring, utilize the Beijing time of issuing on internet, by this time point signal through USB/RS232 adapter, the single-chip microcomputer II of sending in electronic switch is processed, trigger and connect electronic switch, thereby connect the power supply of time synchronisation unit, make each condition monitoring point start at one time grid cyclic wave zero cross signal to count, during operation, first turn-off mechanical power switch, after connecting, electronic switch in parallel with it connects again mechanical power switch, each comprehensive Real-Time Monitoring unit is to detect in the count value of preset a series of grid cyclic wave zero cross signals, and testing result is carried out to record, for the high-tension apparatus of each condition monitoring point and the running status of equipment, carry out comparative study, and connecting each other between sesolution apparatus operation sign, meteorological condition and fault.
2. a kind of high-voltage fence condition monitoring system according to claim 1, is characterized in that it comprises:
Described electrification in high voltage sensor is the auxiliary equipment of high voltage display device product on market;
Described time synchronisation unit, comprises cycle detection, single-chip microcomputer;
Between described electronic switch and PC, connect a USB/RS232 adapter, make the single-chip microcomputer II in electronic switch can be by the USB port communications of its serial port and PC;
Described comprehensive Real-Time Monitoring unit, for setting synchronous detection time point environmental monitoring and the condition monitoring of high-voltage transmission equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310554100.4A CN103558476B (en) | 2013-11-09 | 2013-11-09 | A kind of high-voltage fence condition monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310554100.4A CN103558476B (en) | 2013-11-09 | 2013-11-09 | A kind of high-voltage fence condition monitoring system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103558476A true CN103558476A (en) | 2014-02-05 |
| CN103558476B CN103558476B (en) | 2015-11-11 |
Family
ID=50012778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310554100.4A Expired - Fee Related CN103558476B (en) | 2013-11-09 | 2013-11-09 | A kind of high-voltage fence condition monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103558476B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105955369A (en) * | 2016-06-20 | 2016-09-21 | 福州台江区超人电子有限公司 | Agricultural greenhouse climate control system |
| CN106089782A (en) * | 2016-06-20 | 2016-11-09 | 福州台江区超人电子有限公司 | Parlor fan natural wind control system |
| CN106455041A (en) * | 2016-12-14 | 2017-02-22 | 国家电网公司 | Time synchronization method and system of electric power wireless sensor network based on power transmission line |
| CN114252110A (en) * | 2022-03-02 | 2022-03-29 | 山东和兑智能科技有限公司 | Intelligent evaluation system and evaluation method for power transformation equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004120930A (en) * | 2002-09-27 | 2004-04-15 | Nishishiba Electric Co Ltd | Fault detection device of power conversion element |
| JP2006343171A (en) * | 2005-06-08 | 2006-12-21 | Yazaki Corp | Flying capacitor system voltage measuring device |
| CN101004436A (en) * | 2007-01-22 | 2007-07-25 | 西南交通大学 | High senitive system for detecting local discharging of high voltage electric power equipment with large capacity |
| CN101162250A (en) * | 2007-10-12 | 2008-04-16 | 中国电力科学研究院 | High voltage DC transmission converter valve maximum transient test methods |
| CN202748429U (en) * | 2012-09-18 | 2013-02-20 | 黑龙江省电力科学研究院 | On-line monitoring system for low-voltage ride through capability of booster station grid connection point of wind power plant access to power grid |
-
2013
- 2013-11-09 CN CN201310554100.4A patent/CN103558476B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004120930A (en) * | 2002-09-27 | 2004-04-15 | Nishishiba Electric Co Ltd | Fault detection device of power conversion element |
| JP2006343171A (en) * | 2005-06-08 | 2006-12-21 | Yazaki Corp | Flying capacitor system voltage measuring device |
| CN101004436A (en) * | 2007-01-22 | 2007-07-25 | 西南交通大学 | High senitive system for detecting local discharging of high voltage electric power equipment with large capacity |
| CN101162250A (en) * | 2007-10-12 | 2008-04-16 | 中国电力科学研究院 | High voltage DC transmission converter valve maximum transient test methods |
| CN202748429U (en) * | 2012-09-18 | 2013-02-20 | 黑龙江省电力科学研究院 | On-line monitoring system for low-voltage ride through capability of booster station grid connection point of wind power plant access to power grid |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105955369A (en) * | 2016-06-20 | 2016-09-21 | 福州台江区超人电子有限公司 | Agricultural greenhouse climate control system |
| CN106089782A (en) * | 2016-06-20 | 2016-11-09 | 福州台江区超人电子有限公司 | Parlor fan natural wind control system |
| CN106455041A (en) * | 2016-12-14 | 2017-02-22 | 国家电网公司 | Time synchronization method and system of electric power wireless sensor network based on power transmission line |
| CN114252110A (en) * | 2022-03-02 | 2022-03-29 | 山东和兑智能科技有限公司 | Intelligent evaluation system and evaluation method for power transformation equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103558476B (en) | 2015-11-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101581752B (en) | Power transmission line parameter online measurement method based on fault wave recording | |
| CN205265368U (en) | Transmission line operation and maintenance management field data application apparatus | |
| CN105071536A (en) | Intelligent distribution transformer area system | |
| CN204854975U (en) | Cubical switchboard temperature on -line monitoring system | |
| CN103576057B (en) | Insulated on-line monitoring system and method | |
| CN104297574A (en) | Substation power frequency electromagnetic environment monitoring system | |
| CN105242119A (en) | Electromagnetic environment monitoring system with noise integrated and method | |
| CN103558476B (en) | A kind of high-voltage fence condition monitoring system | |
| CN103674292A (en) | Temperature detecting method and apparatus for devices of transformer station | |
| CN206193123U (en) | Distribution automation integration testing arrangement | |
| CN102636710A (en) | Online monitoring system of high-voltage equipment | |
| CN104237467A (en) | Online monitoring system for state of insulator contamination | |
| CN203465023U (en) | Power cable insulation fault on-line monitoring system based on single-chip microcomputer | |
| CN104779595A (en) | Secondary electric leakage protection monitoring system of distribution network | |
| CN107478909A (en) | A kind of smart grounding resistance on-line computing model and its system | |
| CN105321316A (en) | Transformer substation bus intelligent temperature measuring system with wireless networking function | |
| CN105319433A (en) | Mechatronics counter for line arrester | |
| CN202533529U (en) | High-voltage equipment on-line monitoring system | |
| CN110501618A (en) | A kind of 3-1000KV cable terminal insulation fault monitoring method | |
| CN203164360U (en) | Transformer device insulation online monitoring system | |
| CN205720494U (en) | A kind of Zinc-Oxide Arrester state on-line detector | |
| CN105337805A (en) | Portable telecommand and telemetering checking device and system for intelligent substation | |
| CN204256921U (en) | A kind of substation bus bar intelligent temperature measurement system with wireless networking function | |
| CN103558432A (en) | High-voltage direct connection type electricity stealing detection device | |
| CN203249699U (en) | Power network operation equipment temperature sensing system based on technology of Internet of Things |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160526 Address after: 100142, No. 8, building 1, building 62, eight Li Zhuang Road, Beijing, Haidian District, 913 Patentee after: The sharp wisdom Energy Science Co., Ltd in Beijing hundred million Address before: 350004 Fuzhou City, Taijiang province Yi Chau longevity Park, block 401, 8, Patentee before: Zhang Jinmu |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151111 Termination date: 20201109 |